All names: SDSSJ200550.04+762536.4, TIC 237295032, Gaia DR3 2288930944128285696, Gaia DR2 2288930944128285696, 2MASS J20055006+7625363, Gaia EDR3 2288930944128285696, SDSS J200550.04+762536.39, SDSS J200550.04+762536.3, GALEX J200550.4+762536, UCAC4 833-018229
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 05 50.05 (0.02) | 20 05 50.04 | 20 05 50.04 | 20 05 50.05 (0.02) | 20 05 50.06 (0.02) | ||||
| Declination | 76 25 36.31 (0.02) | 76 25 36.36 | 76 25 36.40 | 76 25 36.31 (0.03) | 76 25 36.37 (0.02) | ||||
| Spectral type | He-sdO | He-sdO | sdOHe | ||||||
| Effective temperature | [K] | 45355.0 (2000) | 37138.0 (3000) | ||||||
| log(g) | [cgs] | 6.00 (0.2) | 6.50 (0.5) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.86 (0.02) | 0.84 (0.03) | 0.84 (0.03) | 0.86 (0.02) | ||||
| Distance | [pc] | 1163.51 (27) | 1196.74 (40) | 1196.68 (40) | 1163.47 (27) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -2.35249394 (0.02) | -2.444 (0.04) | -2.443531594 (0.04) | -2.352 (0.02) | ||||
| Proper motion (declination) | [mas/yr] | -3.729350302 (0.03) | -3.771 (0.06) | -3.771353388 (0.06) | -3.729 (0.03) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 14.52 (0.01) | ||||||||
| V magnitude | 14.61 (0.01) | ||||||||
| R magnitude | 14.85 (0.1) | ||||||||
| I magnitude | |||||||||
| J magnitude | 14.95 (0.04) | 14.95 (0.04) | |||||||
| H magnitude | 15.00 (0.08) | 15.00 (0.08) | |||||||
| K magnitude | 15.32 (0.2) | 15.32 (0.2) | |||||||
| u magnitude | 14.23 (0.004) | 14.23 (0.004) | 14.23 (0) | 14.23 (0.004) | |||||
| g magnitude | 14.45 (0.003) | 14.45 (0.003) | 14.45 (0) | 14.51 (0.01) | |||||
| r magnitude | 14.75 (0.003) | 14.75 (0.003) | 14.75 (0) | 14.75 (0.01) | |||||
| i magnitude | 14.99 (0.004) | 14.99 (0.004) | 14.99 (0) | 15.10 (0.01) | |||||
| z magnitude | 15.24 (0.006) | 15.24 (0.006) | 15.24 (0.01) | 15.24 (0.006) | |||||
| G magnitude | 14.61 (0.001) | 14.63 (0.0005) | 14.63 | 14.61 (0.003) | |||||
| BP magnitude | 14.54 (0.001) | 14.50 (0.006) | 14.50 | ||||||
| RP magnitude | 14.72 (0.002) | 14.72 (0.002) | 14.72 | ||||||
| Pan g magnitude | 14.55 (0.006) | 14.55 (0.006) | |||||||
| Pan r magnitude | 14.80 (0.003) | 14.80 (0.003) | |||||||
| Pan i magnitude | 15.05 (0.001) | 15.05 (0.001) | |||||||
| Pan z magnitude | 15.27 (0.002) | 15.27 (0.002) | |||||||
| Pan y magnitude | 15.43 (0.005) | 15.43 (0.005) | |||||||
| E(B-V) | 0.156 | ||||||||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.